Interesting, I didn't knew that. I helped write a couple immediate-mode GUI some time ago, but I'm not deeply familiar with ImGui. If this is the case, then it

Interesting, I didn't knew that. I helped write a couple immediate-mode GUI some time ago, but I'm not deeply familiar with ImGui. If this is the case, then it seems entirely possible to have an "internal retained mode", and might even help with some extra stuff like focus management and accessibility.